Guest Stars Miranda Cosgrove as Herself Adam Sandler as Himself Heidi Klum as Herself Nathan Kress as Himself Selena Gomez as Herself Robert Downey Jr. as Himself (Robert Downey, Jr.) Victoria Justice as Herself Chris Rock as Himself Jennette McCurdy as Herself Ariana Grande as Herself Keke Palmer as Herself Jaden Smith as Himself Noah Munck as Himself James Maslow as Himself Carlos PenaVega as Himself Kendall Schmidt as Himself Leon Thomas as Himself Sarah Hyland as Herself Zac Efron as Himself Daniella Monet as Herself Avan Jogia as Himself Taylor Lautner as Himself Logan Henderson as Himself Matt Bennett as Himself Emma Stone as Herself Nolan Gould as Himself Paul Wight as Himself Elizabeth Gillies as Herself Ariel Winter as Herself Ludacris as Himself Josh Hutcherson as Himself Kristen Stewart as Herself Michelle Obama as Herself Lucas Cruikshank as Himself Michael Mizanin as Himself Willow Smith as Herself Cody Simpson as Himself Halston Sage as Herself Chris Colfer as Himself Halle Berry as Herself Taylor Swift as Herself Ryan Potter as Himself Katy Perry as Herself (Performer) Ciara Bravo as Herself Samantha Boscarino as Herself MAX as Himself Jada Pinkett Smith as Herself Gracie Dzienny as Herself Andrew Garfield as Himself Rachel Crow as Herself Lulu Antariksa as Herself Nicki Minaj as Herself Justin Bieber as Himself Carlos Knight as Himself Chris O'Neal as Himself Challen Cates as Herself Jeff Sutphen as Himself Cee Lo Green as Himself Cee Lo Green voices Creepy Voice One Direction as Themselves (Performer) Anthony Carelli as Himself Tanya Chisholm as Herself Stephen Kramer Glickman as Himself Noah Crawford as Himself